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WO2024082484A1 - Procédé et appareil de prise en charge de sélection de procédé de positionnement - Google Patents

Procédé et appareil de prise en charge de sélection de procédé de positionnement Download PDF

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Publication number
WO2024082484A1
WO2024082484A1 PCT/CN2023/074432 CN2023074432W WO2024082484A1 WO 2024082484 A1 WO2024082484 A1 WO 2024082484A1 CN 2023074432 W CN2023074432 W CN 2023074432W WO 2024082484 A1 WO2024082484 A1 WO 2024082484A1
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WO
WIPO (PCT)
Prior art keywords
positioning
positioning method
lmf
dnu
integrity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2023/074432
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English (en)
Inventor
Lihua Yang
Jie Hu
Jing HAN
Luning Liu
Haiming Wang
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Lenovo Beijing Ltd
Original Assignee
Lenovo Beijing Ltd
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Filing date
Publication date
Application filed by Lenovo Beijing Ltd filed Critical Lenovo Beijing Ltd
Priority to PCT/CN2023/074432 priority Critical patent/WO2024082484A1/fr
Publication of WO2024082484A1 publication Critical patent/WO2024082484A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/0205—Details
    • G01S5/0244—Accuracy or reliability of position solution or of measurements contributing thereto
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/0009—Transmission of position information to remote stations
    • G01S5/0018—Transmission from mobile station to base station
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/0205—Details
    • G01S5/0236—Assistance data, e.g. base station almanac
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Definitions

  • Embodiments of the present application are related to wireless communication technology, especially, related to positioning techniques for wireless communication, e.g., a method and apparatus of supporting positioning method selection.
  • Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, broadcasts, and so on.
  • Wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., time, frequency, and power) .
  • Examples of wireless communication systems may include fourth generation (4G) systems such as long term evolution (LTE) systems, LTE-advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may also be referred to as new radio (NR) systems.
  • 4G systems such as long term evolution (LTE) systems, LTE-advanced (LTE-A) systems, or LTE-A Pro systems
  • 5G systems which may also be referred to as new radio (NR) systems.
  • LTE long term evolution
  • LTE-A LTE-advanced
  • NR new radio
  • positioning integrity concepts were introduced to support global navigation satellite system (GNSS) positioning in 3rd generation partnership project (3GPP) release (Rel) -17, which is also referred to as radio access technology (RAT) independent positioning.
  • GNSS global navigation satellite system
  • 3GPP 3rd generation partnership project
  • RAT radio access technology
  • positioning integrity it is defined as a measure of the trust in the accuracy of the position-related data provided by a positioning system and as the ability to provide timely and valid warnings to location service (LCS) clients when the positioning system does not fulfil the condition for intended operations.
  • LCS location service
  • RAT dependent positioning techniques involve both user equipment (UE) , next generation radio access network (NG-RAN) node (e.g., transmit-receive point (TRP) and 5G Node-B (gNB) , etc. ) and location management function (LMF) entities.
  • UE user equipment
  • NG-RAN next generation radio access network
  • TRP transmit-receive point
  • gNB 5G Node-B
  • LMF location management function
  • RAT-dependent positioning will reuse some concepts and principles developed for GNSS positioning where possible, a mass of technical problems still need to be solved for RAT-dependent positioning techniques to support reliable positioning, which include but not limited to positioning method selection (or reselection) .
  • An objective of the embodiments of the present application is to provide a technical solution for wireless communication, especially a technical solution of supporting positioning method selection, e.g., how to trigger and transfer signaling for a positioning method reselection procedure to improve the integrity of RAT-dependent positioning.
  • Some embodiments of the present application provide an exemplary UE, which includes: a transceiver; and a processor coupled to the transceiver, wherein the processor is configured to: receive, from an LMF, a first request message associated with selecting a second positioning method to replace a first positioning method; and transmit, to the LMF, a first response message for the LMF to select the second positioning method.
  • Some other embodiments of the present application provide an exemplary method of supporting positioning method selection, which can be performed in a UE.
  • the exemplary method includes: receiving, from an LMF, a first request message associated with selecting a second positioning method to replace a first positioning method; and transmitting, to the LMF, a first response message for the LMF to select the second positioning method.
  • the processor is further configured to transmit capability information of the UE for the LMF to select the second positioning method.
  • the processor in the case that triggering a procedure of selecting the second positioning method is determined by the LMF, before receiving the first request message, the processor is further configured to transmit at least one of the following to the LMF: target device errors associated with the first positioning method; calculated or estimated positioning results associated with the first positioning method; error sources related to downlink measurement associated with the first positioning method; integrity key performance indicator (KPIs) for LMF based integrity with mobile originated (MO) location request (LR) service; calculated integrity results associated with the first positioning method; or information indicating that a positioning system using the first positioning method is unavailable or integrity events occur.
  • KPIs integrity key performance indicator
  • MO mobile originated
  • LR location request
  • the processor before receiving the first request message, is further configured to: determine whether to trigger a procedure of selecting the second positioning method; and transmit a positioning method reselection request to the LMF in the case of determining to trigger the procedure of selecting the second positioning method.
  • the processor is configured to determine to trigger the procedure of selecting the second positioning method in the case of: receiving error causes associated with the first positioning method from the LMF; or calculated or estimated positioning results associated with the first positioning method being lower than quality of service (QoS) requirements.
  • QoS quality of service
  • the processor is configured to determine to trigger the procedure of selecting the second positioning method in the case of a number of DoNotUse (DNU) flags being true associated with the first positioning method is larger than a preconfigured or configured threshold of DNU flags.
  • DNU DoNotUse
  • the processor is configured to receive the preconfigured or configured threshold of DNU flags from the LMF.
  • DNU flags associated with the first positioning method are DNU flags associated with downlink measurement, DNU flags associated with uplink measurement or DNU flags associated with assistance data.
  • a DNU flag associated with downlink measurement is configured by the UE
  • a DNU flag associated with uplink measurement or assistance data is configured by a radio access network (RAN) node involved in a positioning system with the first positioning method
  • the processor is configured to receive DNU flags associated with uplink measurement or assistance data from the RAN node or via the LMF.
  • RAN radio access network
  • DNU flags are configured by the LMF
  • the processor is configured to: transmit error sources associated with downlink measurements to the LMF so that the LMF will configure the DNU flag associated with downlink measurement based on the received error sources; and receive information related to the configured DNU flags from the LMF.
  • the processor is configured to determine to trigger the procedure of selecting the second positioning method in the case of determining that a positioning system using the first positioning method is unavailable or integrity events occur.
  • the processor is configured to: receive an integrity KPI from the LMF; and compare integrity results with the integrity KPI to determine whether the positioning system is unavailable or whether there happen integrity events.
  • the processor is configured to: report information indicating that the positioning system is unavailable or integrity events occur to the LMF.
  • Some yet other embodiments of the present application provide an exemplary LMF, which includes: a transceiver; and a processor coupled to the transceiver, wherein the processor is configured to: transmit, to at least one positioning device of a positioning system, a first request message associated with selecting a second positioning method to replace a first positioning method; receive, from the at least one positioning device, a first response message for selecting the second positioning method; and determine the second positioning method at least based on the first response message and stored capability information of the positioning system.
  • Some yet other embodiments of the present application provide an exemplary method of supporting positioning method selection, which can be performed in an LMF.
  • the exemplary method includes: transmitting, to at least one positioning device of a positioning system, a first request message associated with selecting a second positioning method to replace a first positioning method; receiving, from the at least one positioning device, a first response message for selecting the second positioning method; and determining the second positioning method at least based on the first response message and stored capability information of the positioning system.
  • the processor is further configured to receive capability information of one or more positioning devices to be used to update the positioning system, and the second positioning method is selected further based on the requested capability information.
  • the processor is configured to transmit the first request message in response to at least one of the following: receiving target device errors associated with the first positioning method from a UE of the at least one target positioning device; receiving radio network causes associated with the first positioning method from a RAN node of the at least one positioning device; receiving positioning results calculated or estimated by the UE associated with the first positioning method being lower than QoS requirements; or positioning results calculated or estimated by the LMF associated with the first positioning method being lower than QoS requirements.
  • the processor is configured to transmit the first request message in response to a number of DNU flags being true is larger than a preconfigured or configured threshold of DNU flags.
  • the processor is configured to: receive error sources associated with downlink measurement from a UE of the at least one target positioning device; and configure DNU flags associated with the received error sources.
  • the processor is configured to: receive error sources associated with uplink measurement and/or associated with assistance data from a RAN node of the at least one positioning device; and configure DNU flags associated with the received error sources.
  • the processor is configured to transmit the first request message in response to that: comparison of integrity results with integrity KPIs indicates that the positioning system is unavailable or integrity events occur; or receiving information indicating that the positioning system using the first positioning method is unavailable or integrity events occur.
  • the processor is configured to transfer the integrity KPIs to the UE, and the integrity results or the information indicating that the positioning system using the first positioning method is unavailable or integrity events occur are received from a UE of the at least one target positioning device; or the processor is configured to receive the integrity KPIs from the UE, and the integrity results are calculated by the LMF.
  • the processor is configured to transmit the first request message in response to receiving a positioning method reselection request from a UE of the at least one target positioning device.
  • the processor before receiving the positioning method reselection request, is configured to transmit error causes to the UE.
  • the processor before receiving the positioning method reselection request, is configured to transmit a preconfigured or configured threshold of DNU flags for determining whether a number of DNU flag being true is larger than the threshold of DNU flags, to the at least positioning device.
  • the processor is configured to: receive DNU flags configured by a RAN node of the at least one positioning device from the RAN node; and transmit the received DNU flags to the UE.
  • the processor is configured to: configure DNU flags corresponding to error sources from the at least one positioning device; and transmit information related to the configured DNU flags to the UE.
  • the processor before receiving the positioning method reselection request, is configured to: receive information indicating that the positioning system is unavailable or integrity events occur from the UE.
  • the processor is configured to: transmit integrity KPIs to the UE, so that the information indicating that the positioning system is unavailable or integrity events occur will be determined based on the integrity KPIs.
  • embodiments of the present application propose a technical solution of positioning UE.
  • the positioning system fails or is unavailable or integrity events occur during procedure (s) for LCS, a positioning method (re) selection procedure will be triggered and performed to improve the integrity of RAT-dependent positioning. Since unchanged information will be reused in the positioning procedure with the new selected positioning method, signaling and overhead will be reduced. Accordingly, embodiments of the present application will improve the existing positioning technology and facilitate the implementation of NR.
  • FIG. 1 is a schematic diagram illustrating an exemplary wireless communication system according to some embodiments of the present application.
  • FIG. 2 is a flow chart illustrating an exemplary procedure of a method of supporting positioning method selection according to some embodiments of the present application.
  • FIG. 3 illustrates a block diagram of an apparatus of supporting positioning method selection according to some embodiments of the present application.
  • FIG. 4 illustrates a block diagram of an apparatus of supporting positioning method selection according to some other embodiments of the present application.
  • FIG. 1 illustrates a schematic diagram of an exemplary wireless communication system 100 according to some embodiments of the present application.
  • the wireless communication system 100 includes at least one BS 101 and at least one UE 102.
  • the wireless communication system 100 includes one BS 101 and two UE 102 (e.g., a first UE 102a and a second UE 102b) for illustrative purpose.
  • a specific number of BSs and UEs are illustrated in FIG. 1 for simplicity, it is contemplated that the wireless communication system 100 may include more or less BSs and UEs in some other embodiments of the present application.
  • the wireless communication system 100 is compatible with any type of network that is capable of sending and receiving wireless communication signals.
  • the wireless communication system 100 is compatible with a wireless communication network, a cellular telephone network, a time division multiple access (TDMA) -based network, a code division multiple access (CDMA) -based network, an orthogonal frequency division multiple access (OFDMA) -based network, an LTE network, a 3GPP-based network, a 3GPP 5G network, a satellite communications network, a high altitude platform network, and/or other communications networks.
  • TDMA time division multiple access
  • CDMA code division multiple access
  • OFDMA orthogonal frequency division multiple access
  • the BS 101 may communicate with a core-network (CN) node (not shown) , e.g., a mobility management entity (MME) or a serving gateway (S-GW) , a mobility management function (AMF) , a user plane function (UPF) , or an LMF etc. via an interface.
  • a BS also be referred to as an access point, an access terminal, a base, a macro cell, a node-B, an enhanced node B (eNB) , a gNB, a home node-B, a relay node, or a device, or described using other terminology used in the art.
  • a BS may also refer to as a RAN node or network apparatus.
  • Each BS may serve a number of UE (s) within a serving area, for example, a cell or a cell sector via a wireless communication link.
  • Neighbor BSs may communicate with each other as necessary, e.g., during a handover procedure for a UE.
  • the UE 102 e.g., the first UE 102a and second UE 102b should be understood as any type terminal device, which may include computing devices, such as desktop computers, laptop computers, personal digital assistants (PDAs) , tablet computers, smart televisions (e.g., televisions connected to the Internet) , set-top boxes, game consoles, security systems (including security cameras) , vehicle on-board computers, network devices (e.g., routers, switches, and modems) , or the like.
  • computing devices such as desktop computers, laptop computers, personal digital assistants (PDAs) , tablet computers, smart televisions (e.g., televisions connected to the Internet) , set-top boxes, game consoles, security systems (including security cameras) , vehicle on-board computers, network devices (e.g., routers, switches, and modems) , or the like.
  • computing devices such as desktop computers, laptop computers, personal digital assistants (PDAs) , tablet computers, smart televisions (e.g.
  • the UE may include a portable wireless communication device, a smart phone, a cellular telephone, a flip phone, a device having a subscriber identity module, a personal computer, a selective call receiver, or any other device that is capable of sending and receiving communication signals on a wireless network.
  • the UE may include wearable devices, such as smart watches, fitness bands, optical head-mounted displays, or the like.
  • the UE may be referred to as a subscriber unit, a mobile, a mobile station, a user, a terminal, a mobile terminal, a wireless terminal, a fixed terminal, a subscriber station, a user terminal, or a device, or described using other terminology used in the art.
  • RAT-dependent positioning techniques are also introduced for positioning UE etc.
  • RAT-dependent positioning techniques involve many positioning methods, e.g., NR-enhanced cell identity (ECID) , multi-roundtrip time (RTT) , downlink (DL) -angle of departure (AoD) , DL-time difference of arrival (TDoA) , uplink (UL) -TDoA, and UL-angle-of-arrival (AoA) , etc.
  • EID NR-enhanced cell identity
  • RTT multi-roundtrip time
  • DL downlink
  • AoD DL-angle of departure
  • TDoA DL-time difference of arrival
  • UL uplink
  • UL-TDoA uplink
  • AoA UL-angle-of-arrival
  • positioning of UE can be done in either UE side or LMF side.
  • location related functions are distributed as shown in the architecture provided in Figure 5.1-1 in TS 38.305 and the overall sequence of events applicable to the UE, NG-RAN and LMF for any location service are clarified in detail in TS 23.501 and TS 23.273.
  • the LMF will decide the positioning method to be used based on a plurality of factors, e.g., LCS client type, required QoS, UE positioning capabilities, gNB positioning capabilities and NG-eNB positioning capabilities etc.
  • a current positioning procedure when estimated positioning results are not reliable or the positioning system is unavailable, the positioning system may declare positioning failures and/or restart another positioning procedure (a new positioning procedure) .
  • the new positioning procedure will include transfer procedures of capability information of UE and RAN node (s) (e.g., NG-eNB etc. ) participating in the positioning, assistance data for the positioning, and location information etc. Since partial information, e.g., information on UE capabilities, unchanged gNB or NG-eNB capabilities etc. may be the same as the former (or old or previous etc. ) positioning procedure, transferring such information will cause large signaling and latency overhead.
  • embodiments of the present application propose triggering and performing a positioning method reselection procedure (or a procedure of selecting a new positioning method, or a positioning method selection procedure) in the case of the positioning system being unavailable or integrity events occur.
  • technical solutions for integrity of RAT-dependent positioning techniques include the triggering of the positioning method reselection procedure, and the signaling (or messages) procedure of the updated (or new) integrity assistance data and updated capability information to the LMF to assist determining (selecting or reselecting etc. ) the new positioning method.
  • exemplary new integrity assistance data may be the information caused by UE moving, including dynamic errors and radio propagation environment errors.
  • Exemplary dynamic errors include uncertainty of line of sight (LoS) indicator and/or non LoS (NLoS) indicator; and uncertainty of measurements, e.g., UE or network (NW) wrongly assessment of LoS/NLoS, positioning reference signal (PRS) reference signal received power (RSRP) , PRS signal to interference plus noise ratio (SINR) , etc.
  • exemplary radio propagation environment errors include radio link failures and/or beam failures, handover failures, poor coverage detection from UE, spoofing, and interference etc.
  • FIG. 2 is a flow chart illustrating an exemplary procedure of a method of supporting positioning method selection according to some embodiments of the present application.
  • a target apparatus e.g., a UE 102 as shown in FIG. 1
  • a CN function entity e.g., an LMF
  • persons skilled in the art can understand that the method implemented in the UE and that implemented in the LMF can be separately implemented and incorporated by other apparatus with the like functions.
  • a positioning method selection procedure will be triggered and performed to select a second positioning method (updated positioning method, or (re) selected positioning method, or new positioning method or the like) to replace the first positioning method.
  • the capability information that is the same as the former (or old or failed or the like) positioning procedure using the first positioning method e.g., UE's capabilities, unchanged RAN node (s) ' capabilities (e.g., gNB(s) 's capabilities etc. will be stored and used in the new positioning procedure associated with the second positioning procedure to reduce signaling and latency.
  • the LMF may transmit, to the UE, a first request message associated with selecting the second positioning method to replace the first positioning method.
  • a first request message is a new integrity assistance data request, which requests the information that needs to be transferred after triggering a procedure of selecting the second positioning method.
  • the UE will receive the first request message.
  • the first request message is associated with selecting the second positioning method.
  • the first request message may also be transmitted to other positioning device (s) (if any) , e.g., a gNB of the positioning system associated with selecting the second positioning method (or potential to be used to update the positioning system) . That is, other positioning device (s) may be involved in the updated positioning system, e.g., the positioning system using the second positioning method.
  • other positioning device (s) may be involved in the updated positioning system, e.g., the positioning system using the second positioning method.
  • the old positioning system (or the like) and the updated positioning system are used for simplicity and clearness, the substance of the positioning system may not change along with different positioning methods.
  • Other positioning device (s) that may be involved in the positioning systems using the first positioning method and the second positioning method for positioning the UE may be the same or partially same or totally different.
  • the positioning device (s) e.g., the UE that receives the first request message may transmit a first response message to the LMF, which can be used for selecting the second positioning method.
  • the first response message may indicate the new integrity assistance data, e.g., the information caused by UE movement, including dynamic errors and radio propagation environment errors etc.
  • the LMF will receive the first response message from the positioning device (s) at least including the UE.
  • the LMF will determine (or select, or reselect) the second positioning method in step 207. For example, the LMF will reselect a second positioning method from the remaining RAT-dependent positioning methods except for the first positioning method at least according to the received new integrity assistance data and the stored capability information, e.g., unchanged UE capability information and unchanged gNB capability information.
  • the LMF may further transmit a second request message to one or more positioning devices (e.g., new gNB) that are associated with selecting the second positioning method, requesting capability information of the one or more positioning devices or other information associated with selecting the second positioning method.
  • the LMF will receive a second response message from the one or more positioning devices in response to the second request message, indicating the requested capability information or other information associated with selecting the second positioning method.
  • the second positioning method will be selected also based on the requested capability information or other information associated with selecting the second positioning method.
  • the at least one positioning device receiving the first request message may be the same or different from the one or more positioning devices receiving the second request message.
  • the one or more positioning devices are only new positioning devices compared with that using the first positioning method.
  • the LMF will deliver positioning assistance data to the positioning device (s) targeting for the second positioning method.
  • the new positioning procedure associated with the second positioning method will be performed.
  • a positioning method selection procedure will be triggered in various manners.
  • the positioning method selection procedure may be triggered by the LMF or UE in the case of at least one condition (or trigger condition) being satisfied, which may be during the positioning procedure, positioning integrity procedure, and/or other procedure (s) .
  • the positioning procedure and positioning integrity procedure they are separate procedures in some embodiments of the present application or are merged into a single procedure in some other embodiments of the present application.
  • the other whole procedure may also be referred to as a super procedure for simplicity and clearness.
  • the LMF will determine whether positioning results using the first positioning method is inaccurate, or whether a positioning system using the first positioning method fails, or whether a positioning system using the first positioning method is unavailable, or whether integrity events occur, and determine whether to trigger a positioning method selection procedure. Whether positioning results using the first positioning method is inaccurate, or whether a positioning system using the first positioning method fails, or whether a positioning system using the first positioning method is unavailable, or whether integrity events occur can be determined in various manners in Scenarios I. Thus, the trigger conditions for a positioning method selection procedure are also various.
  • the LMF may determine to trigger a positioning method selection procedure in response to at least one of the following: receiving target device errors associated with the first positioning method from a UE of at least one target positioning device; or receiving radio network causes associated with the first positioning method from a RAN node of the at least one positioning device; or receiving positioning results calculated or estimated by the UE associated with the first positioning method being lower than QoS requirements; or positioning results calculated or estimated by the LMF associated with the first positioning method being lower than QoS requirements.
  • the LMF may transmit the first request message in the case of determining to trigger a positioning method selection procedure.
  • the UE may transmit at least one of the following to the LMF in Scenarios I so that the LMF will determine whether to trigger a positioning method selection procedure: target device errors associated with the first positioning method; calculated or estimated positioning results associated with the first positioning method; error sources related to downlink measurement associated with the first positioning method; integrity KPIs for LMF based integrity with MO-LR service; calculated integrity results associated with the first positioning method; or information indicating that a positioning system using the first positioning method is unavailable or integrity events occur.
  • the LMF will determine whether to trigger a positioning method selection procedure during the positioning procedure or a super procedure at least including the positioning procedure or the like. For example, the LMF may determine that a positioning system using the first positioning method fails or positioning results are inaccurate and to trigger a positioning method selection procedure in response to at least one specific error (or error cause) indicated from positioning device (s) , e.g., the UE and/or RAN node (s) . For another example, the LMF may trigger a positioning method selection procedure in response to calculated positioning results and/or estimated positioning results cannot satisfy the QoS requirements.
  • Exemplary specific errors from the UE may be target device error (s) (e.g., represented by a parameter TargetDeviceError) associated with the first positioning method from the UE, e.g., via a long term evolution (LTE) positioning protocol (LPP) message (or signaling) .
  • target device error e.g., represented by a parameter TargetDeviceError
  • LTE long term evolution
  • LPP positioning protocol
  • the LMF may trigger the positioning method selection procedure.
  • target device error s
  • the LMF may trigger the positioning method selection procedure.
  • the name of the parameters are only used as examples for clearly illustrating the embodiments, which may be replaced by other names, and thus should not be unduly used to limit the scope of the present application.
  • Exemplary specific errors from the RAN node (s) may be radio network cause (s) from at least one RAN node, e.g., via the information element (IE) "Radio Network Layer Cause” , from at least one gNB participating in the positioning using the first positioning method.
  • the LMF may trigger the positioning method reselection procedure.
  • the calculated positioning results and/or estimated positioning results will be illustrated respectively in view of UE-based positioning and LMF-based positioning considering that positioning of the UE can be done in either UE side (UE-based positioning) or LMF side (LMF-based positioning) .
  • the UE will calculate and/or estimate positioning results.
  • the UE may send the calculated positioning results and/or estimated positioning results to the LMF using the LPP location information message or other LPP message.
  • the LMF will compare the calculated and/or estimated positioning results with the required QoS to determine whether to trigger the positioning method selection procedure. For example, in the case that the calculated and/or estimated positioning results cannot satisfy the required QoS, the LMF may determine that the positioning system using the first positioning method fails or positioning results are inaccurate and determine to trigger the positioning method selection procedure.
  • the LMF will calculate and/or estimate the positioning results. Similarly, the LMF will compare the calculated and/or estimated positioning results with the required QoS to determine whether to trigger the positioning method selection procedure. For example, in the case that the calculated and/or estimated positioning results cannot satisfy the required QoS, the LMF may determine that the positioning system using the first positioning method fails or positioning results are inaccurate and determine to trigger the positioning method selection procedure.
  • the LMF will determine whether to trigger a positioning method selection procedure during the positioning integrity procedure (also referred to as an integrity procedure) or a super-procedure at least including the positioning integrity procedure or the like.
  • a positioning integrity procedure may be a UE-based integrity procedure (or UE-based integrity) or LMF-based integrity procedure (or LMF-based integrity) based on whether the integrity results are calculated in the UE side or the LMF side. In the scenarios of UE-based integrity, the integrity will be calculated in the UE side; and in the scenarios of LMF-based integrity, the integrity will be calculated in the LMF side.
  • the trigger conditions are associated with DNU flags, or integrity results, or the combination of DNU flags and integrity results.
  • the LMF may trigger a positioning method selection procedure in response to that the number of DNU flags being true (e.g., identified by parameter "DNU-true" ) is larger than a predefined or (pre) configured threshold of DNU flags.
  • An exemplary threshold of DNU flags may be configured by the LMF.
  • the LMF may trigger a positioning method selection procedure in response to that comparison of integrity results with integrity KPIs indicates the positioning system using the first positioning method unavailable or integrity event occurrence.
  • DNU flags can be configured (or marked) by the LMF, which may be based on error sources related to assistance data, error sources related to DL measurement and/or error sources related to UL measurement.
  • RAN node (s) e.g., NG-RAN nodes for positioning will provide the error sources related to assistance data to the LMF by an NR positioning protocol A (NRPPa) message (or signaling) .
  • NRPPa NR positioning protocol A
  • An exemplary error source related to assistance data may be an error source related to inter-TRP synchronization, TRP location, or antenna reference point (ARP) location, etc.
  • An exemplary NRPPa message may be TRP configuration information exchange message.
  • the LMF will configure the DNU flag associated with each error source to be true or false in a corresponding IE, e.g., NR-Integrity-ServiceAlert, and/or NR-RealTimeIntegrity etc.
  • a DNU flag related to inter-TRP synchronization being configured may be NR-RTD-InfoDoNotUse
  • a DNU flag related to TRP location being configured may be NR-TRP-LocationInfoDoNotUse
  • a DNU flag related to ARP location being configured may be ARPLocationInformationDoNotUse, etc.
  • the LMF may trigger a positioning method selection procedure.
  • the UE may provide the error sources related to DL measurement to the LMF by LPP message (s) or the like, e.g., LPP provide location information messages.
  • An exemplary error source related to DL measurement may be an error source related to RSTD measurement, or UE receiving (Rx) -transmitting (Tx) time difference measurement etc.
  • the LMF will configure the DNU flag to be true or false associated with each error source, e.g., in corresponding IE NR-Integrity-DL-MeasurementAlert.
  • the LMF may configure a DNU flag related to RSTD measurement by generating NR-RSTDDoNotUse, or configure a DNU flag related to UE Rx-Tx time difference measurement by generating NR-UE-RxTxTimeDiffDoNotUse etc., which indicates whether the corresponding DL measurement error can be used for calculating integrity.
  • the LMF will trigger a positioning method selection procedure.
  • RAN node (s) e.g., NG-RAN nodes for positioning may provide the error sources related to UL measurement to the LMF by NRPPa message (s) or the like, e.g., NRPPa measurement response messages.
  • An exemplary error source related to UL measurement may be an error source related to RTOA measurement, AoA measurement, or gNB Rx-Tx time difference measurement etc.
  • the LMF will configure the DNU flag to be true or false associated with each error source, e.g., in a corresponding IE (e.g., NR-Integrity-UL-MeasurementAlert) .
  • a corresponding IE e.g., NR-Integrity-UL-MeasurementAlert
  • the LMF may configure a DNU flag related to RTOA measurement by generating NR-RTOADoNotUse, configure a DNU flag related to AoA measurement by generating NR-AoADoNotUse, or configure a DNU flag related to gNB Rx-Tx time difference measurement by generating NR-gNB-RxTxTimeDiffDoNotUse etc., which indicates whether the corresponding UL measurement error can be used for calculating integrity.
  • the LMF will trigger a positioning method selection procedure.
  • Exemplary integrity KPI may be target integrity risk (TIR) , alert limit (AL) , time-to-alert (TTA) , etc.
  • Exemplary calculated integrity results may be protection level (PL) etc.
  • Integrity KPI may be transferred between the UE and the LMF in some scenarios (the transferred integrity KPI may also be referred to as source of integrity KPI or source of KPI) .
  • the integrity KPI may be transferred from the LMF to the UE via LPP message (s) or the like, e.g., LPP request location information message (s) , which reuses the agreements on GNSS integrity.
  • the integrity KPI may be transferred from the UE to the LMF, which may be carried in MO-LR location request message or in legacy LPP procedures (e.g., legacy LPP procedures for capability information, assistance data, or location information) .
  • legacy LPP procedures e.g., legacy LPP procedures for capability information, assistance data, or location information
  • PL being larger than AL indicates the corresponding positioning system unavailable
  • PL being smaller than AL indicates the corresponding positioning system available.
  • integrity event e.g., misleading information (MI) , or Hazardous MI (HMI) etc. may occur even in the case of PL ⁇ AL indicating positioning system available.
  • the UE will report the calculated integrity results, e.g., PL to the LMF.
  • the LMF will compare the calculated integrity results with the integrity KPI, e.g., AL.
  • the LMF may trigger the positioning method selection procedure.
  • the LMF may also trigger the positioning method selection procedure. Otherwise, in the case that the positioning system is available and no integrity event happens, the LMF will not trigger the positioning method selection procedure.
  • the UE will compare the calculated integrity results with the integrity KPI and transmit the information indicates the comparison result to the LMF, e.g., transmitting information indicating that a positioning system using the first positioning method is unavailable or integrity events occur.
  • the LMF will calculate the integrity results, e.g., PL and compare the integrity results with the integrity KPI, e.g., AL. Similarly, in the case that PL is larger than AL, which indicates the positioning system unavailable, the LMF may trigger the positioning method selection procedure. In the case that PL is smaller than AL while integrity event (s) occurs, the LMF may also trigger the positioning method selection procedure. Otherwise, in the case that the positioning system is available and no integrity event happens, the LMF will not trigger the positioning method selection procedure.
  • the integrity results e.g., PL
  • AL integrity KPI
  • embodiments of the present application also provide the manner that the UE determines whether to trigger a positioning method selection procedure.
  • the UE may determine whether to trigger a procedure of selecting the second positioning method, and transmit a positioning method selection request (or positioning method reselection request or the like) to the LMF in the case of determining to trigger the procedure of selecting the second positioning method.
  • a positioning method selection request or positioning method reselection request or the like
  • it may transmit the first request message in response to receiving a positioning method selection request from the UE.
  • the positioning method selection procedure may be triggered by the UE both in positioning procedure and positioning integrity procedure in response to trigger condition (s) being satisfied.
  • the UE will determine whether to trigger a positioning method selection procedure during the positioning procedure (or a super-procedure at least including the positioning procedure or the like) .
  • the UE may trigger a positioning method selection procedure in response to at least one specific error indicated from the LMF.
  • the UE may trigger a positioning method selection procedure in response to that calculated positioning results and/or estimated positioning results cannot satisfy the QoS requirements.
  • Exemplary specific errors from the LMF may be location server error (s) (e.g., identified by a parameter LocationServerError) associated with the first positioning method from the LMF, e.g., via an LPP message or the like.
  • An exemplary LPP message or signaling may be an LPP provide assistance data message.
  • the UE may receive at least one specific error from the LMF, e.g., location server error (s) related to DL-TDOA, DL-AoD or multi-RTT etc., which may be respectively identified by parameters NR-DL-TDOA-LocationServerErrorCauses, NR-DL-AoD-LocationServerErrorCauses, or NR-Multi-RTT-LocationServerErrorCauses etc.
  • the UE may determine to trigger the positioning method selection procedure and send a positioning method selection request to the LMF, e.g., in an Abort message or another LPP message to the LMF.
  • the UE will compare the calculated and/or estimated positioning results with the QoS requirement to determine whether to trigger the positioning method selection procedure. For example, in the case that the calculated and/or estimated positioning results cannot satisfy the required QoS, the UE may determine that the positioning system using the first positioning method fails or positioning results are inaccurate and to trigger the positioning method selection procedure.
  • the UE may send a positioning method selection request to the LMF to trigger the positioning method selection procedure, wherein the positioning method selection request may be integrated in the LPP provide location information message or in an LPP message separate from the LPP provide location information message.
  • a positioning integrity procedure may be a UE-based integrity procedure (or UE-based integrity) or LMF-based integrity procedure (or LMF-based integrity) based on whether the integrity results are calculated in the UE side or the LMF side.
  • the trigger conditions are associated with DNU flag, or integrity results or the combination of them.
  • the UE may trigger a positioning method selection procedure in response to that the number of integrity parameters with DNU flags being true is larger than a predefined or (pre) configured threshold of DNU flags.
  • An exemplary threshold of DNU flags may be configured by the LMF.
  • the UE may trigger a positioning method selection procedure in response to that comparison of integrity results with integrity KPIs indicates the positioning system using the first positioning method unavailable or integrity event occurrence.
  • the DNU flags can be configured by the UE, or other positioning device (s) (e.g., positioning RAN node (s) ) , or LMF.
  • the threshold of DNU flags (pre) configured by the LMF may be transferred to the UE via an LPP message, e.g., LPP request capability information message or LPP provide assistance data message or the like.
  • the UE may configure the DNU flags based on error sources related to DL measurement similar to Scenarios I. For example, the UE may generate an IE, e.g., NR-Integrity-DL-MeasurementAlert to indicate whether the corresponding DL measurement error can be used for calculating integrity.
  • An exemplary DNU flag may be configured by the UE based on error sources related to RSTD measurement, e.g., identified by NR-RSTDDoNotUse, or configured by the UE based on error sources related to UE Rx-Tx time difference measurement, e.g., identified by NR-UE-RxTxTimeDiffDoNotUse, etc.
  • the positioning RAN node (s) may configure the DNU flags based on error sources related to assistance data and UL measurement similar to Scenarios I.
  • the positioning RAN node (s) e.g., gNB may generate corresponding IE (s) , e.g., NR-Integrity-ServiceAlert, and/or NR-RealTimeIntegrity etc. to indicate whether the corresponding assistant data errors can be used for calculating integrity.
  • corresponding IE e.g., NR-Integrity-ServiceAlert, and/or NR-RealTimeIntegrity etc.
  • An exemplary DNU flag may be configured by the positioning RAN node (s) based on error sources related to each assistance data elements in the corresponding IE, e.g., based on error sources related to RTD, e.g., identified by NR-RTD-InfoDoNotUse, or based on error sources related to TRP location, e.g., identified by NR-TRP-LocationInfoDoNotUse, or based on error sources related to ARP location, e.g., identified by RPLocationInformationDoNotUse, etc.
  • the positioning RAN node (s) e.g., gNB may generate IE(s) , e.g., NR-Integrity-UL-MeasurementAlert to indicate whether the corresponding UL measurement errors can be used for calculating integrity.
  • IE(s) e.g., NR-Integrity-UL-MeasurementAlert
  • An exemplary DNU flag may be configured by the positioning RAN node (s) based on error sources related to each UL measurement element in the corresponding IE, e.g., based on error sources related to RTOA measurement (e.g., identified by NR-RTOADoNotUse) , or based on error sources related to AoA measurement (e.g., identified by NR-AoADoNotUse) , or by error sources related to gNB Rx-Tx time difference measurement (e.g., identified by NR-gNB Rx-Tx Time DifferenceDoNotUse) etc.
  • RTOA measurement e.g., identified by NR-RTOADoNotUse
  • AoA measurement e.g., identified by NR-AoADoNotUse
  • gNB Rx-Tx time difference measurement e.g., identified by NR-gNB Rx-Tx Time DifferenceDoNotUse
  • the positioning RAN node (s) e.g., gNB will send the configured DNU flags to the UE for DNU flag configuration in various manners.
  • the RAN node may directly transmit the configured DNU flags to the UE, e.g., via radio resource control (RRC) message or the like.
  • the RAN node may transmit the configured DNU flags to the UE via the LMF.
  • the RAN node may transmit the configured DNU flags to the LMF via NRPPa message, and then the LMF will transmit the received DNU flags to the UE via the LPP message or the like.
  • the UE may determine to trigger the positioning method selection procedure and send the positioning method selection request to the LMF.
  • DNU flag (s) may be configured by the LMF, which may be based on error sources related to assistance data, error sources related to DL measurement and/or error sources related to UL measurement similar to Scenarios I.
  • a threshold will be provided for the UE to compare it with the number of DNU flags being true.
  • a threshold preconfigured or configured by the LMF may be transferred to the UE by an LPP message or the like, e.g., by LPP request capability information message or LPP provide assistance data message.
  • the LMF will configure the DNU flag for each error source provided by the UE and gNB, e.g., error source related to assistance data, DL measurements, and/or UL measurements etc. Details are similar to Scenarios I and thus will not be repeated.
  • the LMF will transmit the information related to the configured DNU flags to the UE. Based on the information related to the configured DNU flags, the UE will determine whether the number of DNU flags being true is larger than the threshold of DNU flags. For example, the LMF may directly transmit the number of DNU flags being true to the UE in assistance data, or indicate information of the DNU flags being true to the UE in assistance data so that the UE can determine the number of DNU flags being true. In the case that the number of DNU flags being true is larger than the threshold of DNU flags, the UE may determine to trigger the positioning method selection procedure and send the positioning method selection request to the LMF.
  • whether to trigger a positioning method selection procedure can also be determined based on integrity results in the positioning integrity procedure according to some other embodiments of the present application.
  • the UE may also report the binary flag, e.g., 0 and 1 to the LMF, to indicate whether the positioning system is available or not via LPP provide location information message or another LPP message.
  • the UE may determine to trigger a positioning method selection procedure and send a positioning method selection request to the LMF.
  • FIG. 3 illustrates a block diagram of an apparatus of supporting positioning method selection 300 according to some embodiments of the present application.
  • the apparatus 300 may include at least one non-transitory computer-readable medium 301, at least one receiving circuitry 302, at least one transmitting circuitry 304, and at least one processor 306 coupled to the non-transitory computer-readable medium 301, the receiving circuitry 302 and the transmitting circuitry 304.
  • the at least one processor 306 may be a central processing unit (CPU) , a digital signaling processing (DSP) , a microprocessor etc.
  • the apparatus 300 may be a UE or LMF configured to perform a method illustrated in the above or the like.
  • the at least one processor 306, transmitting circuitry 304, and receiving circuitry 302 are described in the singular, the plural is contemplated unless a limitation to the singular is explicitly stated.
  • the receiving circuitry 302 and the transmitting circuitry 304 can be combined into a single device, such as a transceiver.
  • the apparatus 300 may further include an input device, a memory, and/or other components.
  • the non-transitory computer-readable medium 301 may have stored thereon computer-executable instructions to cause a processor to implement the method with respect to a remote apparatus, e.g., a UE as described above.
  • the computer-executable instructions when executed, cause the processor 306 interacting with receiving circuitry 302 and transmitting circuitry 304, so as to perform the steps with respect to a UE as depicted above.
  • the non-transitory computer-readable medium 301 may have stored thereon computer-executable instructions to cause a processor to implement the method with respect to a CN node, e.g., an LMF as described above.
  • the computer-executable instructions when executed, cause the processor 306 interacting with receiving circuitry 302 and transmitting circuitry 304, so as to perform the steps with respect to an LMF as depicted above.
  • FIG. 4 is a block diagram of an apparatus of supporting positioning method selection 400 according to some other embodiments of the present application.
  • the apparatus 400 may include at least one processor 402 and at least one transceiver 404 coupled to the at least one processor 402.
  • the transceiver 404 may include at least one separate receiving circuitry 406 and transmitting circuitry 408, or at least one integrated receiving circuitry 406 and transmitting circuitry 408.
  • the at least one processor 402 may be a CPU, a DSP, a microprocessor etc.
  • the apparatus 400 when the apparatus 400 is a remote apparatus, e.g., a UE.
  • the UE includes a transceiver; and a processor coupled to the transceiver, wherein the processor is configured to: receive, from an LMF, a first request message associated with selecting a second positioning method to replace a first positioning method; and transmit, to the LMF, a first response message for the LMF to select the second positioning method.
  • the apparatus 400 when the apparatus 400 is a CN node, e.g., an LMF.
  • the LMF includes a transceiver; and a processor coupled to the transceiver, wherein the processor is configured to: transmit, to at least one positioning device of a positioning system, a first request message associated with selecting a second positioning method to replace a first positioning method; receive, from the at least one positioning device, a first response message for selecting the second positioning method; and determine the second positioning method at least based on the first response message and stored capability information of the positioning system.
  • the method according to embodiments of the present application can also be implemented on a programmed processor.
  • the controllers, flowcharts, and modules may also be implemented on a general purpose or special purpose computer, a programmed microprocessor or microcontroller and peripheral integrated circuit elements, an integrated circuit, a hardware electronic or logic circuit such as a discrete element circuit, a programmable logic device, or the like.
  • any device capable of implementing the flowcharts shown in the figures may be used to implement the processor functions of this application.
  • an embodiment of the present application provides an apparatus, including a processor and a memory. Computer programmable instructions for implementing a method are stored in the memory, and the processor is configured to perform the computer programmable instructions to implement the method.
  • the method may be a method as stated above or other method according to an embodiment of the present application.
  • An alternative embodiment preferably implements the methods according to embodiments of the present application in a non-transitory, computer-readable storage medium storing computer programmable instructions.
  • the instructions are preferably executed by computer-executable components preferably integrated with a network security system.
  • the non-transitory, computer-readable storage medium may be stored on any suitable computer readable media such as random access memory (RAMs) , read only memory (ROMs) , flash memory, electrically erasable programmable read only memory (EEPROMs) , optical storage devices (compact disc (CD) or digital video disc (DVD) ) , hard drives, floppy drives, or any suitable device.
  • the computer-executable component is preferably a processor but the instructions may alternatively or additionally be executed by any suitable dedicated hardware device.
  • an embodiment of the present application provides a non-transitory, computer-readable storage medium having computer programmable instructions stored therein.
  • the computer programmable instructions are configured to implement a method as stated above or other method according to an embodiment
  • the terms “includes, “ “including, “ or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
  • An element proceeded by “a, “ “an, “ or the like does not, without more constraints, preclude the existence of additional identical elements in the process, method, article, or apparatus that includes the element.
  • the term “another” is defined as at least a second or more.
  • the terms “having, “ and the like, as used herein, are defined as “including. "

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Des modes de réalisation de la présente invention concernent un procédé et un appareil de prise en charge de sélection de procédé de positionnement. Un procédé donné à titre d'exemple consiste à : recevoir, en provenance d'une LMF, un premier message de demande associé à la sélection d'un second procédé de positionnement pour remplacer un premier procédé de positionnement ; et transmettre, à la LMF, un premier message de réponse pour la LMF pour sélectionner le second procédé de positionnement.
PCT/CN2023/074432 2023-02-03 2023-02-03 Procédé et appareil de prise en charge de sélection de procédé de positionnement Ceased WO2024082484A1 (fr)

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WO2021252377A1 (fr) * 2020-06-10 2021-12-16 Qualcomm Incorporated Procédés et appareils pour la mise à jour des capacités de positionnement d'un équipement utilisateur durant une session de positionnement
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WO2022005724A1 (fr) * 2020-06-29 2022-01-06 Qualcomm Incorporated Mise à jour dynamique de paramètres de qualité de service (qos) pendant une session de positionnement new radio (nr) en cours
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CN113825226A (zh) * 2020-06-18 2021-12-21 华为技术有限公司 自适应定位置信度的定位的方法以及通信装置
WO2022005724A1 (fr) * 2020-06-29 2022-01-06 Qualcomm Incorporated Mise à jour dynamique de paramètres de qualité de service (qos) pendant une session de positionnement new radio (nr) en cours
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